13 #include "streaming.h"
14 #include "thread-utils.h"
16 #include "object-store.h"
18 static const char index_pack_usage
[] =
19 "git index-pack [-v] [-o <index-file>] [--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
22 struct pack_idx_entry idx
;
24 unsigned char hdr_size
;
26 signed char real_type
;
35 struct base_data
*base
;
36 struct base_data
*child
;
37 struct object_entry
*obj
;
40 int ref_first
, ref_last
;
41 int ofs_first
, ofs_last
;
46 struct base_data
*base_cache
;
47 size_t base_cache_used
;
51 /* Remember to update object flag allocation in object.h */
52 #define FLAG_LINK (1u<<20)
53 #define FLAG_CHECKED (1u<<21)
55 struct ofs_delta_entry
{
60 struct ref_delta_entry
{
65 static struct object_entry
*objects
;
66 static struct object_stat
*obj_stat
;
67 static struct ofs_delta_entry
*ofs_deltas
;
68 static struct ref_delta_entry
*ref_deltas
;
69 static struct thread_local nothread_data
;
70 static int nr_objects
;
71 static int nr_ofs_deltas
;
72 static int nr_ref_deltas
;
73 static int ref_deltas_alloc
;
74 static int nr_resolved_deltas
;
75 static int nr_threads
;
77 static int from_stdin
;
79 static int do_fsck_object
;
80 static struct fsck_options fsck_options
= FSCK_OPTIONS_STRICT
;
82 static int show_resolving_progress
;
84 static int check_self_contained_and_connected
;
86 static struct progress
*progress
;
88 /* We always read in 4kB chunks. */
89 static unsigned char input_buffer
[4096];
90 static unsigned int input_offset
, input_len
;
91 static off_t consumed_bytes
;
92 static off_t max_input_size
;
93 static unsigned deepest_delta
;
94 static git_hash_ctx input_ctx
;
95 static uint32_t input_crc32
;
96 static int input_fd
, output_fd
;
97 static const char *curr_pack
;
99 static struct thread_local
*thread_data
;
100 static int nr_dispatched
;
101 static int threads_active
;
103 static pthread_mutex_t read_mutex
;
104 #define read_lock() lock_mutex(&read_mutex)
105 #define read_unlock() unlock_mutex(&read_mutex)
107 static pthread_mutex_t counter_mutex
;
108 #define counter_lock() lock_mutex(&counter_mutex)
109 #define counter_unlock() unlock_mutex(&counter_mutex)
111 static pthread_mutex_t work_mutex
;
112 #define work_lock() lock_mutex(&work_mutex)
113 #define work_unlock() unlock_mutex(&work_mutex)
115 static pthread_mutex_t deepest_delta_mutex
;
116 #define deepest_delta_lock() lock_mutex(&deepest_delta_mutex)
117 #define deepest_delta_unlock() unlock_mutex(&deepest_delta_mutex)
119 static pthread_mutex_t type_cas_mutex
;
120 #define type_cas_lock() lock_mutex(&type_cas_mutex)
121 #define type_cas_unlock() unlock_mutex(&type_cas_mutex)
123 static pthread_key_t key
;
125 static inline void lock_mutex(pthread_mutex_t
*mutex
)
128 pthread_mutex_lock(mutex
);
131 static inline void unlock_mutex(pthread_mutex_t
*mutex
)
134 pthread_mutex_unlock(mutex
);
138 * Mutex and conditional variable can't be statically-initialized on Windows.
140 static void init_thread(void)
143 init_recursive_mutex(&read_mutex
);
144 pthread_mutex_init(&counter_mutex
, NULL
);
145 pthread_mutex_init(&work_mutex
, NULL
);
146 pthread_mutex_init(&type_cas_mutex
, NULL
);
148 pthread_mutex_init(&deepest_delta_mutex
, NULL
);
149 pthread_key_create(&key
, NULL
);
150 thread_data
= xcalloc(nr_threads
, sizeof(*thread_data
));
151 for (i
= 0; i
< nr_threads
; i
++) {
152 thread_data
[i
].pack_fd
= open(curr_pack
, O_RDONLY
);
153 if (thread_data
[i
].pack_fd
== -1)
154 die_errno(_("unable to open %s"), curr_pack
);
160 static void cleanup_thread(void)
166 pthread_mutex_destroy(&read_mutex
);
167 pthread_mutex_destroy(&counter_mutex
);
168 pthread_mutex_destroy(&work_mutex
);
169 pthread_mutex_destroy(&type_cas_mutex
);
171 pthread_mutex_destroy(&deepest_delta_mutex
);
172 for (i
= 0; i
< nr_threads
; i
++)
173 close(thread_data
[i
].pack_fd
);
174 pthread_key_delete(key
);
178 static int mark_link(struct object
*obj
, int type
, void *data
, struct fsck_options
*options
)
183 if (type
!= OBJ_ANY
&& obj
->type
!= type
)
184 die(_("object type mismatch at %s"), oid_to_hex(&obj
->oid
));
186 obj
->flags
|= FLAG_LINK
;
190 /* The content of each linked object must have been checked
191 or it must be already present in the object database */
192 static unsigned check_object(struct object
*obj
)
197 if (!(obj
->flags
& FLAG_LINK
))
200 if (!(obj
->flags
& FLAG_CHECKED
)) {
202 int type
= oid_object_info(the_repository
, &obj
->oid
, &size
);
204 die(_("did not receive expected object %s"),
205 oid_to_hex(&obj
->oid
));
206 if (type
!= obj
->type
)
207 die(_("object %s: expected type %s, found %s"),
208 oid_to_hex(&obj
->oid
),
209 type_name(obj
->type
), type_name(type
));
210 obj
->flags
|= FLAG_CHECKED
;
217 static unsigned check_objects(void)
219 unsigned i
, max
, foreign_nr
= 0;
221 max
= get_max_object_index();
222 for (i
= 0; i
< max
; i
++)
223 foreign_nr
+= check_object(get_indexed_object(i
));
228 /* Discard current buffer used content. */
229 static void flush(void)
233 write_or_die(output_fd
, input_buffer
, input_offset
);
234 the_hash_algo
->update_fn(&input_ctx
, input_buffer
, input_offset
);
235 memmove(input_buffer
, input_buffer
+ input_offset
, input_len
);
241 * Make sure at least "min" bytes are available in the buffer, and
242 * return the pointer to the buffer.
244 static void *fill(int min
)
246 if (min
<= input_len
)
247 return input_buffer
+ input_offset
;
248 if (min
> sizeof(input_buffer
))
249 die(Q_("cannot fill %d byte",
250 "cannot fill %d bytes",
255 ssize_t ret
= xread(input_fd
, input_buffer
+ input_len
,
256 sizeof(input_buffer
) - input_len
);
260 die_errno(_("read error on input"));
264 display_throughput(progress
, consumed_bytes
+ input_len
);
265 } while (input_len
< min
);
269 static void use(int bytes
)
271 if (bytes
> input_len
)
272 die(_("used more bytes than were available"));
273 input_crc32
= crc32(input_crc32
, input_buffer
+ input_offset
, bytes
);
275 input_offset
+= bytes
;
277 /* make sure off_t is sufficiently large not to wrap */
278 if (signed_add_overflows(consumed_bytes
, bytes
))
279 die(_("pack too large for current definition of off_t"));
280 consumed_bytes
+= bytes
;
281 if (max_input_size
&& consumed_bytes
> max_input_size
)
282 die(_("pack exceeds maximum allowed size"));
285 static const char *open_pack_file(const char *pack_name
)
290 struct strbuf tmp_file
= STRBUF_INIT
;
291 output_fd
= odb_mkstemp(&tmp_file
,
292 "pack/tmp_pack_XXXXXX");
293 pack_name
= strbuf_detach(&tmp_file
, NULL
);
295 output_fd
= open(pack_name
, O_CREAT
|O_EXCL
|O_RDWR
, 0600);
297 die_errno(_("unable to create '%s'"), pack_name
);
299 nothread_data
.pack_fd
= output_fd
;
301 input_fd
= open(pack_name
, O_RDONLY
);
303 die_errno(_("cannot open packfile '%s'"), pack_name
);
305 nothread_data
.pack_fd
= input_fd
;
307 the_hash_algo
->init_fn(&input_ctx
);
311 static void parse_pack_header(void)
313 struct pack_header
*hdr
= fill(sizeof(struct pack_header
));
315 /* Header consistency check */
316 if (hdr
->hdr_signature
!= htonl(PACK_SIGNATURE
))
317 die(_("pack signature mismatch"));
318 if (!pack_version_ok(hdr
->hdr_version
))
319 die(_("pack version %"PRIu32
" unsupported"),
320 ntohl(hdr
->hdr_version
));
322 nr_objects
= ntohl(hdr
->hdr_entries
);
323 use(sizeof(struct pack_header
));
326 static NORETURN
void bad_object(off_t offset
, const char *format
,
327 ...) __attribute__((format (printf
, 2, 3)));
329 static NORETURN
void bad_object(off_t offset
, const char *format
, ...)
334 va_start(params
, format
);
335 vsnprintf(buf
, sizeof(buf
), format
, params
);
337 die(_("pack has bad object at offset %"PRIuMAX
": %s"),
338 (uintmax_t)offset
, buf
);
341 static inline struct thread_local
*get_thread_data(void)
345 return pthread_getspecific(key
);
346 assert(!threads_active
&&
347 "This should only be reached when all threads are gone");
349 return ¬hread_data
;
352 static void set_thread_data(struct thread_local
*data
)
355 pthread_setspecific(key
, data
);
358 static struct base_data
*alloc_base_data(void)
360 struct base_data
*base
= xcalloc(1, sizeof(struct base_data
));
366 static void free_base_data(struct base_data
*c
)
369 FREE_AND_NULL(c
->data
);
370 get_thread_data()->base_cache_used
-= c
->size
;
374 static void prune_base_data(struct base_data
*retain
)
377 struct thread_local
*data
= get_thread_data();
378 for (b
= data
->base_cache
;
379 data
->base_cache_used
> delta_base_cache_limit
&& b
;
381 if (b
->data
&& b
!= retain
)
386 static void link_base_data(struct base_data
*base
, struct base_data
*c
)
391 get_thread_data()->base_cache
= c
;
396 get_thread_data()->base_cache_used
+= c
->size
;
400 static void unlink_base_data(struct base_data
*c
)
402 struct base_data
*base
= c
->base
;
406 get_thread_data()->base_cache
= NULL
;
410 static int is_delta_type(enum object_type type
)
412 return (type
== OBJ_REF_DELTA
|| type
== OBJ_OFS_DELTA
);
415 static void *unpack_entry_data(off_t offset
, unsigned long size
,
416 enum object_type type
, struct object_id
*oid
)
418 static char fixed_buf
[8192];
426 if (!is_delta_type(type
)) {
427 hdrlen
= xsnprintf(hdr
, sizeof(hdr
), "%s %"PRIuMAX
,
428 type_name(type
),(uintmax_t)size
) + 1;
429 the_hash_algo
->init_fn(&c
);
430 the_hash_algo
->update_fn(&c
, hdr
, hdrlen
);
433 if (type
== OBJ_BLOB
&& size
> big_file_threshold
)
436 buf
= xmallocz(size
);
438 memset(&stream
, 0, sizeof(stream
));
439 git_inflate_init(&stream
);
440 stream
.next_out
= buf
;
441 stream
.avail_out
= buf
== fixed_buf
? sizeof(fixed_buf
) : size
;
444 unsigned char *last_out
= stream
.next_out
;
445 stream
.next_in
= fill(1);
446 stream
.avail_in
= input_len
;
447 status
= git_inflate(&stream
, 0);
448 use(input_len
- stream
.avail_in
);
450 the_hash_algo
->update_fn(&c
, last_out
, stream
.next_out
- last_out
);
451 if (buf
== fixed_buf
) {
452 stream
.next_out
= buf
;
453 stream
.avail_out
= sizeof(fixed_buf
);
455 } while (status
== Z_OK
);
456 if (stream
.total_out
!= size
|| status
!= Z_STREAM_END
)
457 bad_object(offset
, _("inflate returned %d"), status
);
458 git_inflate_end(&stream
);
460 the_hash_algo
->final_fn(oid
->hash
, &c
);
461 return buf
== fixed_buf
? NULL
: buf
;
464 static void *unpack_raw_entry(struct object_entry
*obj
,
466 struct object_id
*ref_oid
,
467 struct object_id
*oid
)
470 unsigned long size
, c
;
475 obj
->idx
.offset
= consumed_bytes
;
476 input_crc32
= crc32(0, NULL
, 0);
481 obj
->type
= (c
>> 4) & 7;
488 size
+= (c
& 0x7f) << shift
;
495 hashcpy(ref_oid
->hash
, fill(the_hash_algo
->rawsz
));
496 use(the_hash_algo
->rawsz
);
502 base_offset
= c
& 127;
505 if (!base_offset
|| MSB(base_offset
, 7))
506 bad_object(obj
->idx
.offset
, _("offset value overflow for delta base object"));
510 base_offset
= (base_offset
<< 7) + (c
& 127);
512 *ofs_offset
= obj
->idx
.offset
- base_offset
;
513 if (*ofs_offset
<= 0 || *ofs_offset
>= obj
->idx
.offset
)
514 bad_object(obj
->idx
.offset
, _("delta base offset is out of bound"));
522 bad_object(obj
->idx
.offset
, _("unknown object type %d"), obj
->type
);
524 obj
->hdr_size
= consumed_bytes
- obj
->idx
.offset
;
526 data
= unpack_entry_data(obj
->idx
.offset
, obj
->size
, obj
->type
, oid
);
527 obj
->idx
.crc32
= input_crc32
;
531 static void *unpack_data(struct object_entry
*obj
,
532 int (*consume
)(const unsigned char *, unsigned long, void *),
535 off_t from
= obj
[0].idx
.offset
+ obj
[0].hdr_size
;
536 off_t len
= obj
[1].idx
.offset
- from
;
537 unsigned char *data
, *inbuf
;
541 data
= xmallocz(consume
? 64*1024 : obj
->size
);
542 inbuf
= xmalloc((len
< 64*1024) ? (int)len
: 64*1024);
544 memset(&stream
, 0, sizeof(stream
));
545 git_inflate_init(&stream
);
546 stream
.next_out
= data
;
547 stream
.avail_out
= consume
? 64*1024 : obj
->size
;
550 ssize_t n
= (len
< 64*1024) ? (ssize_t
)len
: 64*1024;
551 n
= xpread(get_thread_data()->pack_fd
, inbuf
, n
, from
);
553 die_errno(_("cannot pread pack file"));
555 die(Q_("premature end of pack file, %"PRIuMAX
" byte missing",
556 "premature end of pack file, %"PRIuMAX
" bytes missing",
561 stream
.next_in
= inbuf
;
564 status
= git_inflate(&stream
, 0);
567 status
= git_inflate(&stream
, 0);
568 if (consume(data
, stream
.next_out
- data
, cb_data
)) {
573 stream
.next_out
= data
;
574 stream
.avail_out
= 64*1024;
575 } while (status
== Z_OK
&& stream
.avail_in
);
577 } while (len
&& status
== Z_OK
&& !stream
.avail_in
);
579 /* This has been inflated OK when first encountered, so... */
580 if (status
!= Z_STREAM_END
|| stream
.total_out
!= obj
->size
)
581 die(_("serious inflate inconsistency"));
583 git_inflate_end(&stream
);
591 static void *get_data_from_pack(struct object_entry
*obj
)
593 return unpack_data(obj
, NULL
, NULL
);
596 static int compare_ofs_delta_bases(off_t offset1
, off_t offset2
,
597 enum object_type type1
,
598 enum object_type type2
)
600 int cmp
= type1
- type2
;
603 return offset1
< offset2
? -1 :
604 offset1
> offset2
? 1 :
608 static int find_ofs_delta(const off_t offset
, enum object_type type
)
610 int first
= 0, last
= nr_ofs_deltas
;
612 while (first
< last
) {
613 int next
= first
+ (last
- first
) / 2;
614 struct ofs_delta_entry
*delta
= &ofs_deltas
[next
];
617 cmp
= compare_ofs_delta_bases(offset
, delta
->offset
,
618 type
, objects
[delta
->obj_no
].type
);
630 static void find_ofs_delta_children(off_t offset
,
631 int *first_index
, int *last_index
,
632 enum object_type type
)
634 int first
= find_ofs_delta(offset
, type
);
636 int end
= nr_ofs_deltas
- 1;
643 while (first
> 0 && ofs_deltas
[first
- 1].offset
== offset
)
645 while (last
< end
&& ofs_deltas
[last
+ 1].offset
== offset
)
647 *first_index
= first
;
651 static int compare_ref_delta_bases(const struct object_id
*oid1
,
652 const struct object_id
*oid2
,
653 enum object_type type1
,
654 enum object_type type2
)
656 int cmp
= type1
- type2
;
659 return oidcmp(oid1
, oid2
);
662 static int find_ref_delta(const struct object_id
*oid
, enum object_type type
)
664 int first
= 0, last
= nr_ref_deltas
;
666 while (first
< last
) {
667 int next
= first
+ (last
- first
) / 2;
668 struct ref_delta_entry
*delta
= &ref_deltas
[next
];
671 cmp
= compare_ref_delta_bases(oid
, &delta
->oid
,
672 type
, objects
[delta
->obj_no
].type
);
684 static void find_ref_delta_children(const struct object_id
*oid
,
685 int *first_index
, int *last_index
,
686 enum object_type type
)
688 int first
= find_ref_delta(oid
, type
);
690 int end
= nr_ref_deltas
- 1;
697 while (first
> 0 && oideq(&ref_deltas
[first
- 1].oid
, oid
))
699 while (last
< end
&& oideq(&ref_deltas
[last
+ 1].oid
, oid
))
701 *first_index
= first
;
705 struct compare_data
{
706 struct object_entry
*entry
;
707 struct git_istream
*st
;
709 unsigned long buf_size
;
712 static int compare_objects(const unsigned char *buf
, unsigned long size
,
715 struct compare_data
*data
= cb_data
;
717 if (data
->buf_size
< size
) {
719 data
->buf
= xmalloc(size
);
720 data
->buf_size
= size
;
724 ssize_t len
= read_istream(data
->st
, data
->buf
, size
);
726 die(_("SHA1 COLLISION FOUND WITH %s !"),
727 oid_to_hex(&data
->entry
->idx
.oid
));
729 die(_("unable to read %s"),
730 oid_to_hex(&data
->entry
->idx
.oid
));
731 if (memcmp(buf
, data
->buf
, len
))
732 die(_("SHA1 COLLISION FOUND WITH %s !"),
733 oid_to_hex(&data
->entry
->idx
.oid
));
740 static int check_collison(struct object_entry
*entry
)
742 struct compare_data data
;
743 enum object_type type
;
746 if (entry
->size
<= big_file_threshold
|| entry
->type
!= OBJ_BLOB
)
749 memset(&data
, 0, sizeof(data
));
751 data
.st
= open_istream(&entry
->idx
.oid
, &type
, &size
, NULL
);
754 if (size
!= entry
->size
|| type
!= entry
->type
)
755 die(_("SHA1 COLLISION FOUND WITH %s !"),
756 oid_to_hex(&entry
->idx
.oid
));
757 unpack_data(entry
, compare_objects
, &data
);
758 close_istream(data
.st
);
763 static void sha1_object(const void *data
, struct object_entry
*obj_entry
,
764 unsigned long size
, enum object_type type
,
765 const struct object_id
*oid
)
767 void *new_data
= NULL
;
768 int collision_test_needed
= 0;
770 assert(data
|| obj_entry
);
772 if (startup_info
->have_repository
) {
774 collision_test_needed
=
775 has_object_file_with_flags(oid
, OBJECT_INFO_QUICK
);
779 if (collision_test_needed
&& !data
) {
781 if (!check_collison(obj_entry
))
782 collision_test_needed
= 0;
785 if (collision_test_needed
) {
787 enum object_type has_type
;
788 unsigned long has_size
;
790 has_type
= oid_object_info(the_repository
, oid
, &has_size
);
792 die(_("cannot read existing object info %s"), oid_to_hex(oid
));
793 if (has_type
!= type
|| has_size
!= size
)
794 die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid
));
795 has_data
= read_object_file(oid
, &has_type
, &has_size
);
798 data
= new_data
= get_data_from_pack(obj_entry
);
800 die(_("cannot read existing object %s"), oid_to_hex(oid
));
801 if (size
!= has_size
|| type
!= has_type
||
802 memcmp(data
, has_data
, size
) != 0)
803 die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid
));
807 if (strict
|| do_fsck_object
) {
809 if (type
== OBJ_BLOB
) {
810 struct blob
*blob
= lookup_blob(the_repository
, oid
);
812 blob
->object
.flags
|= FLAG_CHECKED
;
814 die(_("invalid blob object %s"), oid_to_hex(oid
));
815 if (do_fsck_object
&&
816 fsck_object(&blob
->object
, (void *)data
, size
, &fsck_options
))
817 die(_("fsck error in packed object"));
821 void *buf
= (void *) data
;
823 assert(data
&& "data can only be NULL for large _blobs_");
826 * we do not need to free the memory here, as the
827 * buf is deleted by the caller.
829 obj
= parse_object_buffer(the_repository
, oid
, type
,
833 die(_("invalid %s"), type_name(type
));
834 if (do_fsck_object
&&
835 fsck_object(obj
, buf
, size
, &fsck_options
))
836 die(_("fsck error in packed object"));
837 if (strict
&& fsck_walk(obj
, NULL
, &fsck_options
))
838 die(_("Not all child objects of %s are reachable"), oid_to_hex(&obj
->oid
));
840 if (obj
->type
== OBJ_TREE
) {
841 struct tree
*item
= (struct tree
*) obj
;
845 if (obj
->type
== OBJ_COMMIT
) {
846 struct commit
*commit
= (struct commit
*) obj
;
847 if (detach_commit_buffer(commit
, NULL
) != data
)
848 BUG("parse_object_buffer transmogrified our buffer");
850 obj
->flags
|= FLAG_CHECKED
;
859 * This function is part of find_unresolved_deltas(). There are two
860 * walkers going in the opposite ways.
862 * The first one in find_unresolved_deltas() traverses down from
863 * parent node to children, deflating nodes along the way. However,
864 * memory for deflated nodes is limited by delta_base_cache_limit, so
865 * at some point parent node's deflated content may be freed.
867 * The second walker is this function, which goes from current node up
868 * to top parent if necessary to deflate the node. In normal
869 * situation, its parent node would be already deflated, so it just
870 * needs to apply delta.
872 * In the worst case scenario, parent node is no longer deflated because
873 * we're running out of delta_base_cache_limit; we need to re-deflate
874 * parents, possibly up to the top base.
876 * All deflated objects here are subject to be freed if we exceed
877 * delta_base_cache_limit, just like in find_unresolved_deltas(), we
878 * just need to make sure the last node is not freed.
880 static void *get_base_data(struct base_data
*c
)
883 struct object_entry
*obj
= c
->obj
;
884 struct base_data
**delta
= NULL
;
885 int delta_nr
= 0, delta_alloc
= 0;
887 while (is_delta_type(c
->obj
->type
) && !c
->data
) {
888 ALLOC_GROW(delta
, delta_nr
+ 1, delta_alloc
);
889 delta
[delta_nr
++] = c
;
893 c
->data
= get_data_from_pack(obj
);
895 get_thread_data()->base_cache_used
+= c
->size
;
898 for (; delta_nr
> 0; delta_nr
--) {
900 c
= delta
[delta_nr
- 1];
902 base
= get_base_data(c
->base
);
903 raw
= get_data_from_pack(obj
);
904 c
->data
= patch_delta(
910 bad_object(obj
->idx
.offset
, _("failed to apply delta"));
911 get_thread_data()->base_cache_used
+= c
->size
;
919 static void resolve_delta(struct object_entry
*delta_obj
,
920 struct base_data
*base
, struct base_data
*result
)
922 void *base_data
, *delta_data
;
925 int i
= delta_obj
- objects
;
926 int j
= base
->obj
- objects
;
927 obj_stat
[i
].delta_depth
= obj_stat
[j
].delta_depth
+ 1;
928 deepest_delta_lock();
929 if (deepest_delta
< obj_stat
[i
].delta_depth
)
930 deepest_delta
= obj_stat
[i
].delta_depth
;
931 deepest_delta_unlock();
932 obj_stat
[i
].base_object_no
= j
;
934 delta_data
= get_data_from_pack(delta_obj
);
935 base_data
= get_base_data(base
);
936 result
->obj
= delta_obj
;
937 result
->data
= patch_delta(base_data
, base
->size
,
938 delta_data
, delta_obj
->size
, &result
->size
);
941 bad_object(delta_obj
->idx
.offset
, _("failed to apply delta"));
942 hash_object_file(result
->data
, result
->size
,
943 type_name(delta_obj
->real_type
), &delta_obj
->idx
.oid
);
944 sha1_object(result
->data
, NULL
, result
->size
, delta_obj
->real_type
,
945 &delta_obj
->idx
.oid
);
947 nr_resolved_deltas
++;
952 * Standard boolean compare-and-swap: atomically check whether "*type" is
953 * "want"; if so, swap in "set" and return true. Otherwise, leave it untouched
956 static int compare_and_swap_type(signed char *type
,
957 enum object_type want
,
958 enum object_type set
)
960 enum object_type old
;
971 static struct base_data
*find_unresolved_deltas_1(struct base_data
*base
,
972 struct base_data
*prev_base
)
974 if (base
->ref_last
== -1 && base
->ofs_last
== -1) {
975 find_ref_delta_children(&base
->obj
->idx
.oid
,
976 &base
->ref_first
, &base
->ref_last
,
979 find_ofs_delta_children(base
->obj
->idx
.offset
,
980 &base
->ofs_first
, &base
->ofs_last
,
983 if (base
->ref_last
== -1 && base
->ofs_last
== -1) {
988 link_base_data(prev_base
, base
);
991 if (base
->ref_first
<= base
->ref_last
) {
992 struct object_entry
*child
= objects
+ ref_deltas
[base
->ref_first
].obj_no
;
993 struct base_data
*result
= alloc_base_data();
995 if (!compare_and_swap_type(&child
->real_type
, OBJ_REF_DELTA
,
996 base
->obj
->real_type
))
997 BUG("child->real_type != OBJ_REF_DELTA");
999 resolve_delta(child
, base
, result
);
1000 if (base
->ref_first
== base
->ref_last
&& base
->ofs_last
== -1)
1001 free_base_data(base
);
1007 if (base
->ofs_first
<= base
->ofs_last
) {
1008 struct object_entry
*child
= objects
+ ofs_deltas
[base
->ofs_first
].obj_no
;
1009 struct base_data
*result
= alloc_base_data();
1011 assert(child
->real_type
== OBJ_OFS_DELTA
);
1012 child
->real_type
= base
->obj
->real_type
;
1013 resolve_delta(child
, base
, result
);
1014 if (base
->ofs_first
== base
->ofs_last
)
1015 free_base_data(base
);
1021 unlink_base_data(base
);
1025 static void find_unresolved_deltas(struct base_data
*base
)
1027 struct base_data
*new_base
, *prev_base
= NULL
;
1029 new_base
= find_unresolved_deltas_1(base
, prev_base
);
1039 prev_base
= base
->base
;
1044 static int compare_ofs_delta_entry(const void *a
, const void *b
)
1046 const struct ofs_delta_entry
*delta_a
= a
;
1047 const struct ofs_delta_entry
*delta_b
= b
;
1049 return delta_a
->offset
< delta_b
->offset
? -1 :
1050 delta_a
->offset
> delta_b
->offset
? 1 :
1054 static int compare_ref_delta_entry(const void *a
, const void *b
)
1056 const struct ref_delta_entry
*delta_a
= a
;
1057 const struct ref_delta_entry
*delta_b
= b
;
1059 return oidcmp(&delta_a
->oid
, &delta_b
->oid
);
1062 static void resolve_base(struct object_entry
*obj
)
1064 struct base_data
*base_obj
= alloc_base_data();
1065 base_obj
->obj
= obj
;
1066 base_obj
->data
= NULL
;
1067 find_unresolved_deltas(base_obj
);
1070 static void *threaded_second_pass(void *data
)
1072 set_thread_data(data
);
1076 display_progress(progress
, nr_resolved_deltas
);
1079 while (nr_dispatched
< nr_objects
&&
1080 is_delta_type(objects
[nr_dispatched
].type
))
1082 if (nr_dispatched
>= nr_objects
) {
1086 i
= nr_dispatched
++;
1089 resolve_base(&objects
[i
]);
1096 * - find locations of all objects;
1097 * - calculate SHA1 of all non-delta objects;
1098 * - remember base (SHA1 or offset) for all deltas.
1100 static void parse_pack_objects(unsigned char *hash
)
1102 int i
, nr_delays
= 0;
1103 struct ofs_delta_entry
*ofs_delta
= ofs_deltas
;
1104 struct object_id ref_delta_oid
;
1108 progress
= start_progress(
1109 from_stdin
? _("Receiving objects") : _("Indexing objects"),
1111 for (i
= 0; i
< nr_objects
; i
++) {
1112 struct object_entry
*obj
= &objects
[i
];
1113 void *data
= unpack_raw_entry(obj
, &ofs_delta
->offset
,
1116 obj
->real_type
= obj
->type
;
1117 if (obj
->type
== OBJ_OFS_DELTA
) {
1119 ofs_delta
->obj_no
= i
;
1121 } else if (obj
->type
== OBJ_REF_DELTA
) {
1122 ALLOC_GROW(ref_deltas
, nr_ref_deltas
+ 1, ref_deltas_alloc
);
1123 oidcpy(&ref_deltas
[nr_ref_deltas
].oid
, &ref_delta_oid
);
1124 ref_deltas
[nr_ref_deltas
].obj_no
= i
;
1127 /* large blobs, check later */
1128 obj
->real_type
= OBJ_BAD
;
1131 sha1_object(data
, NULL
, obj
->size
, obj
->type
,
1134 display_progress(progress
, i
+1);
1136 objects
[i
].idx
.offset
= consumed_bytes
;
1137 stop_progress(&progress
);
1139 /* Check pack integrity */
1141 the_hash_algo
->final_fn(hash
, &input_ctx
);
1142 if (!hasheq(fill(the_hash_algo
->rawsz
), hash
))
1143 die(_("pack is corrupted (SHA1 mismatch)"));
1144 use(the_hash_algo
->rawsz
);
1146 /* If input_fd is a file, we should have reached its end now. */
1147 if (fstat(input_fd
, &st
))
1148 die_errno(_("cannot fstat packfile"));
1149 if (S_ISREG(st
.st_mode
) &&
1150 lseek(input_fd
, 0, SEEK_CUR
) - input_len
!= st
.st_size
)
1151 die(_("pack has junk at the end"));
1153 for (i
= 0; i
< nr_objects
; i
++) {
1154 struct object_entry
*obj
= &objects
[i
];
1155 if (obj
->real_type
!= OBJ_BAD
)
1157 obj
->real_type
= obj
->type
;
1158 sha1_object(NULL
, obj
, obj
->size
, obj
->type
,
1163 die(_("confusion beyond insanity in parse_pack_objects()"));
1168 * - for all non-delta objects, look if it is used as a base for
1170 * - if used as a base, uncompress the object and apply all deltas,
1171 * recursively checking if the resulting object is used as a base
1172 * for some more deltas.
1174 static void resolve_deltas(void)
1178 if (!nr_ofs_deltas
&& !nr_ref_deltas
)
1181 /* Sort deltas by base SHA1/offset for fast searching */
1182 QSORT(ofs_deltas
, nr_ofs_deltas
, compare_ofs_delta_entry
);
1183 QSORT(ref_deltas
, nr_ref_deltas
, compare_ref_delta_entry
);
1185 if (verbose
|| show_resolving_progress
)
1186 progress
= start_progress(_("Resolving deltas"),
1187 nr_ref_deltas
+ nr_ofs_deltas
);
1190 if (nr_threads
> 1 || getenv("GIT_FORCE_THREADS")) {
1192 for (i
= 0; i
< nr_threads
; i
++) {
1193 int ret
= pthread_create(&thread_data
[i
].thread
, NULL
,
1194 threaded_second_pass
, thread_data
+ i
);
1196 die(_("unable to create thread: %s"),
1199 for (i
= 0; i
< nr_threads
; i
++)
1200 pthread_join(thread_data
[i
].thread
, NULL
);
1205 for (i
= 0; i
< nr_objects
; i
++) {
1206 struct object_entry
*obj
= &objects
[i
];
1208 if (is_delta_type(obj
->type
))
1211 display_progress(progress
, nr_resolved_deltas
);
1217 * - append objects to convert thin pack to full pack if required
1218 * - write the final pack hash
1220 static void fix_unresolved_deltas(struct hashfile
*f
);
1221 static void conclude_pack(int fix_thin_pack
, const char *curr_pack
, unsigned char *pack_hash
)
1223 if (nr_ref_deltas
+ nr_ofs_deltas
== nr_resolved_deltas
) {
1224 stop_progress(&progress
);
1225 /* Flush remaining pack final hash. */
1230 if (fix_thin_pack
) {
1232 unsigned char read_hash
[GIT_MAX_RAWSZ
], tail_hash
[GIT_MAX_RAWSZ
];
1233 struct strbuf msg
= STRBUF_INIT
;
1234 int nr_unresolved
= nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
;
1235 int nr_objects_initial
= nr_objects
;
1236 if (nr_unresolved
<= 0)
1237 die(_("confusion beyond insanity"));
1238 REALLOC_ARRAY(objects
, nr_objects
+ nr_unresolved
+ 1);
1239 memset(objects
+ nr_objects
+ 1, 0,
1240 nr_unresolved
* sizeof(*objects
));
1241 f
= hashfd(output_fd
, curr_pack
);
1242 fix_unresolved_deltas(f
);
1243 strbuf_addf(&msg
, Q_("completed with %d local object",
1244 "completed with %d local objects",
1245 nr_objects
- nr_objects_initial
),
1246 nr_objects
- nr_objects_initial
);
1247 stop_progress_msg(&progress
, msg
.buf
);
1248 strbuf_release(&msg
);
1249 finalize_hashfile(f
, tail_hash
, 0);
1250 hashcpy(read_hash
, pack_hash
);
1251 fixup_pack_header_footer(output_fd
, pack_hash
,
1252 curr_pack
, nr_objects
,
1253 read_hash
, consumed_bytes
-the_hash_algo
->rawsz
);
1254 if (!hasheq(read_hash
, tail_hash
))
1255 die(_("Unexpected tail checksum for %s "
1256 "(disk corruption?)"), curr_pack
);
1258 if (nr_ofs_deltas
+ nr_ref_deltas
!= nr_resolved_deltas
)
1259 die(Q_("pack has %d unresolved delta",
1260 "pack has %d unresolved deltas",
1261 nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
),
1262 nr_ofs_deltas
+ nr_ref_deltas
- nr_resolved_deltas
);
1265 static int write_compressed(struct hashfile
*f
, void *in
, unsigned int size
)
1269 unsigned char outbuf
[4096];
1271 git_deflate_init(&stream
, zlib_compression_level
);
1272 stream
.next_in
= in
;
1273 stream
.avail_in
= size
;
1276 stream
.next_out
= outbuf
;
1277 stream
.avail_out
= sizeof(outbuf
);
1278 status
= git_deflate(&stream
, Z_FINISH
);
1279 hashwrite(f
, outbuf
, sizeof(outbuf
) - stream
.avail_out
);
1280 } while (status
== Z_OK
);
1282 if (status
!= Z_STREAM_END
)
1283 die(_("unable to deflate appended object (%d)"), status
);
1284 size
= stream
.total_out
;
1285 git_deflate_end(&stream
);
1289 static struct object_entry
*append_obj_to_pack(struct hashfile
*f
,
1290 const unsigned char *sha1
, void *buf
,
1291 unsigned long size
, enum object_type type
)
1293 struct object_entry
*obj
= &objects
[nr_objects
++];
1294 unsigned char header
[10];
1295 unsigned long s
= size
;
1297 unsigned char c
= (type
<< 4) | (s
& 15);
1300 header
[n
++] = c
| 0x80;
1306 hashwrite(f
, header
, n
);
1308 obj
[0].hdr_size
= n
;
1310 obj
[0].real_type
= type
;
1311 obj
[1].idx
.offset
= obj
[0].idx
.offset
+ n
;
1312 obj
[1].idx
.offset
+= write_compressed(f
, buf
, size
);
1313 obj
[0].idx
.crc32
= crc32_end(f
);
1315 hashcpy(obj
->idx
.oid
.hash
, sha1
);
1319 static int delta_pos_compare(const void *_a
, const void *_b
)
1321 struct ref_delta_entry
*a
= *(struct ref_delta_entry
**)_a
;
1322 struct ref_delta_entry
*b
= *(struct ref_delta_entry
**)_b
;
1323 return a
->obj_no
- b
->obj_no
;
1326 static void fix_unresolved_deltas(struct hashfile
*f
)
1328 struct ref_delta_entry
**sorted_by_pos
;
1332 * Since many unresolved deltas may well be themselves base objects
1333 * for more unresolved deltas, we really want to include the
1334 * smallest number of base objects that would cover as much delta
1335 * as possible by picking the
1336 * trunc deltas first, allowing for other deltas to resolve without
1337 * additional base objects. Since most base objects are to be found
1338 * before deltas depending on them, a good heuristic is to start
1339 * resolving deltas in the same order as their position in the pack.
1341 ALLOC_ARRAY(sorted_by_pos
, nr_ref_deltas
);
1342 for (i
= 0; i
< nr_ref_deltas
; i
++)
1343 sorted_by_pos
[i
] = &ref_deltas
[i
];
1344 QSORT(sorted_by_pos
, nr_ref_deltas
, delta_pos_compare
);
1346 for (i
= 0; i
< nr_ref_deltas
; i
++) {
1347 struct ref_delta_entry
*d
= sorted_by_pos
[i
];
1348 enum object_type type
;
1349 struct base_data
*base_obj
= alloc_base_data();
1351 if (objects
[d
->obj_no
].real_type
!= OBJ_REF_DELTA
)
1353 base_obj
->data
= read_object_file(&d
->oid
, &type
,
1355 if (!base_obj
->data
)
1358 if (check_object_signature(&d
->oid
, base_obj
->data
,
1359 base_obj
->size
, type_name(type
)))
1360 die(_("local object %s is corrupt"), oid_to_hex(&d
->oid
));
1361 base_obj
->obj
= append_obj_to_pack(f
, d
->oid
.hash
,
1362 base_obj
->data
, base_obj
->size
, type
);
1363 find_unresolved_deltas(base_obj
);
1364 display_progress(progress
, nr_resolved_deltas
);
1366 free(sorted_by_pos
);
1369 static const char *derive_filename(const char *pack_name
, const char *suffix
,
1373 if (!strip_suffix(pack_name
, ".pack", &len
))
1374 die(_("packfile name '%s' does not end with '.pack'"),
1376 strbuf_add(buf
, pack_name
, len
);
1377 strbuf_addch(buf
, '.');
1378 strbuf_addstr(buf
, suffix
);
1382 static void write_special_file(const char *suffix
, const char *msg
,
1383 const char *pack_name
, const unsigned char *hash
,
1384 const char **report
)
1386 struct strbuf name_buf
= STRBUF_INIT
;
1387 const char *filename
;
1389 int msg_len
= strlen(msg
);
1392 filename
= derive_filename(pack_name
, suffix
, &name_buf
);
1394 filename
= odb_pack_name(&name_buf
, hash
, suffix
);
1396 fd
= odb_pack_keep(filename
);
1398 if (errno
!= EEXIST
)
1399 die_errno(_("cannot write %s file '%s'"),
1403 write_or_die(fd
, msg
, msg_len
);
1404 write_or_die(fd
, "\n", 1);
1407 die_errno(_("cannot close written %s file '%s'"),
1412 strbuf_release(&name_buf
);
1415 static void final(const char *final_pack_name
, const char *curr_pack_name
,
1416 const char *final_index_name
, const char *curr_index_name
,
1417 const char *keep_msg
, const char *promisor_msg
,
1418 unsigned char *hash
)
1420 const char *report
= "pack";
1421 struct strbuf pack_name
= STRBUF_INIT
;
1422 struct strbuf index_name
= STRBUF_INIT
;
1428 fsync_or_die(output_fd
, curr_pack_name
);
1429 err
= close(output_fd
);
1431 die_errno(_("error while closing pack file"));
1435 write_special_file("keep", keep_msg
, final_pack_name
, hash
,
1438 write_special_file("promisor", promisor_msg
, final_pack_name
,
1441 if (final_pack_name
!= curr_pack_name
) {
1442 if (!final_pack_name
)
1443 final_pack_name
= odb_pack_name(&pack_name
, hash
, "pack");
1444 if (finalize_object_file(curr_pack_name
, final_pack_name
))
1445 die(_("cannot store pack file"));
1446 } else if (from_stdin
)
1447 chmod(final_pack_name
, 0444);
1449 if (final_index_name
!= curr_index_name
) {
1450 if (!final_index_name
)
1451 final_index_name
= odb_pack_name(&index_name
, hash
, "idx");
1452 if (finalize_object_file(curr_index_name
, final_index_name
))
1453 die(_("cannot store index file"));
1455 chmod(final_index_name
, 0444);
1457 if (do_fsck_object
) {
1458 struct packed_git
*p
;
1459 p
= add_packed_git(final_index_name
, strlen(final_index_name
), 0);
1461 install_packed_git(the_repository
, p
);
1465 printf("%s\n", sha1_to_hex(hash
));
1467 struct strbuf buf
= STRBUF_INIT
;
1469 strbuf_addf(&buf
, "%s\t%s\n", report
, sha1_to_hex(hash
));
1470 write_or_die(1, buf
.buf
, buf
.len
);
1471 strbuf_release(&buf
);
1474 * Let's just mimic git-unpack-objects here and write
1475 * the last part of the input buffer to stdout.
1478 err
= xwrite(1, input_buffer
+ input_offset
, input_len
);
1482 input_offset
+= err
;
1486 strbuf_release(&index_name
);
1487 strbuf_release(&pack_name
);
1490 static int git_index_pack_config(const char *k
, const char *v
, void *cb
)
1492 struct pack_idx_option
*opts
= cb
;
1494 if (!strcmp(k
, "pack.indexversion")) {
1495 opts
->version
= git_config_int(k
, v
);
1496 if (opts
->version
> 2)
1497 die(_("bad pack.indexversion=%"PRIu32
), opts
->version
);
1500 if (!strcmp(k
, "pack.threads")) {
1501 nr_threads
= git_config_int(k
, v
);
1503 die(_("invalid number of threads specified (%d)"),
1505 if (!HAVE_THREADS
&& nr_threads
!= 1) {
1506 warning(_("no threads support, ignoring %s"), k
);
1511 return git_default_config(k
, v
, cb
);
1514 static int cmp_uint32(const void *a_
, const void *b_
)
1516 uint32_t a
= *((uint32_t *)a_
);
1517 uint32_t b
= *((uint32_t *)b_
);
1519 return (a
< b
) ? -1 : (a
!= b
);
1522 static void read_v2_anomalous_offsets(struct packed_git
*p
,
1523 struct pack_idx_option
*opts
)
1525 const uint32_t *idx1
, *idx2
;
1527 const uint32_t hashwords
= the_hash_algo
->rawsz
/ sizeof(uint32_t);
1529 /* The address of the 4-byte offset table */
1530 idx1
= (((const uint32_t *)p
->index_data
)
1531 + 2 /* 8-byte header */
1533 + hashwords
* p
->num_objects
/* object ID table */
1534 + p
->num_objects
/* CRC32 table */
1537 /* The address of the 8-byte offset table */
1538 idx2
= idx1
+ p
->num_objects
;
1540 for (i
= 0; i
< p
->num_objects
; i
++) {
1541 uint32_t off
= ntohl(idx1
[i
]);
1542 if (!(off
& 0x80000000))
1544 off
= off
& 0x7fffffff;
1545 check_pack_index_ptr(p
, &idx2
[off
* 2]);
1549 * The real offset is ntohl(idx2[off * 2]) in high 4
1550 * octets, and ntohl(idx2[off * 2 + 1]) in low 4
1551 * octets. But idx2[off * 2] is Zero!!!
1553 ALLOC_GROW(opts
->anomaly
, opts
->anomaly_nr
+ 1, opts
->anomaly_alloc
);
1554 opts
->anomaly
[opts
->anomaly_nr
++] = ntohl(idx2
[off
* 2 + 1]);
1557 QSORT(opts
->anomaly
, opts
->anomaly_nr
, cmp_uint32
);
1560 static void read_idx_option(struct pack_idx_option
*opts
, const char *pack_name
)
1562 struct packed_git
*p
= add_packed_git(pack_name
, strlen(pack_name
), 1);
1565 die(_("Cannot open existing pack file '%s'"), pack_name
);
1566 if (open_pack_index(p
))
1567 die(_("Cannot open existing pack idx file for '%s'"), pack_name
);
1569 /* Read the attributes from the existing idx file */
1570 opts
->version
= p
->index_version
;
1572 if (opts
->version
== 2)
1573 read_v2_anomalous_offsets(p
, opts
);
1576 * Get rid of the idx file as we do not need it anymore.
1577 * NEEDSWORK: extract this bit from free_pack_by_name() in
1578 * sha1-file.c, perhaps? It shouldn't matter very much as we
1579 * know we haven't installed this pack (hence we never have
1580 * read anything from it).
1582 close_pack_index(p
);
1586 static void show_pack_info(int stat_only
)
1588 int i
, baseobjects
= nr_objects
- nr_ref_deltas
- nr_ofs_deltas
;
1589 unsigned long *chain_histogram
= NULL
;
1592 chain_histogram
= xcalloc(deepest_delta
, sizeof(unsigned long));
1594 for (i
= 0; i
< nr_objects
; i
++) {
1595 struct object_entry
*obj
= &objects
[i
];
1597 if (is_delta_type(obj
->type
))
1598 chain_histogram
[obj_stat
[i
].delta_depth
- 1]++;
1601 printf("%s %-6s %"PRIuMAX
" %"PRIuMAX
" %"PRIuMAX
,
1602 oid_to_hex(&obj
->idx
.oid
),
1603 type_name(obj
->real_type
), (uintmax_t)obj
->size
,
1604 (uintmax_t)(obj
[1].idx
.offset
- obj
->idx
.offset
),
1605 (uintmax_t)obj
->idx
.offset
);
1606 if (is_delta_type(obj
->type
)) {
1607 struct object_entry
*bobj
= &objects
[obj_stat
[i
].base_object_no
];
1608 printf(" %u %s", obj_stat
[i
].delta_depth
,
1609 oid_to_hex(&bobj
->idx
.oid
));
1615 printf_ln(Q_("non delta: %d object",
1616 "non delta: %d objects",
1619 for (i
= 0; i
< deepest_delta
; i
++) {
1620 if (!chain_histogram
[i
])
1622 printf_ln(Q_("chain length = %d: %lu object",
1623 "chain length = %d: %lu objects",
1624 chain_histogram
[i
]),
1626 chain_histogram
[i
]);
1630 int cmd_index_pack(int argc
, const char **argv
, const char *prefix
)
1632 int i
, fix_thin_pack
= 0, verify
= 0, stat_only
= 0;
1633 const char *curr_index
;
1634 const char *index_name
= NULL
, *pack_name
= NULL
;
1635 const char *keep_msg
= NULL
;
1636 const char *promisor_msg
= NULL
;
1637 struct strbuf index_name_buf
= STRBUF_INIT
;
1638 struct pack_idx_entry
**idx_objects
;
1639 struct pack_idx_option opts
;
1640 unsigned char pack_hash
[GIT_MAX_RAWSZ
];
1641 unsigned foreign_nr
= 1; /* zero is a "good" value, assume bad */
1642 int report_end_of_input
= 0;
1645 * index-pack never needs to fetch missing objects, since it only
1646 * accesses the repo to do hash collision checks
1648 fetch_if_missing
= 0;
1650 if (argc
== 2 && !strcmp(argv
[1], "-h"))
1651 usage(index_pack_usage
);
1653 read_replace_refs
= 0;
1654 fsck_options
.walk
= mark_link
;
1656 reset_pack_idx_option(&opts
);
1657 git_config(git_index_pack_config
, &opts
);
1658 if (prefix
&& chdir(prefix
))
1659 die(_("Cannot come back to cwd"));
1661 for (i
= 1; i
< argc
; i
++) {
1662 const char *arg
= argv
[i
];
1665 if (!strcmp(arg
, "--stdin")) {
1667 } else if (!strcmp(arg
, "--fix-thin")) {
1669 } else if (skip_to_optional_arg(arg
, "--strict", &arg
)) {
1672 fsck_set_msg_types(&fsck_options
, arg
);
1673 } else if (!strcmp(arg
, "--check-self-contained-and-connected")) {
1675 check_self_contained_and_connected
= 1;
1676 } else if (!strcmp(arg
, "--fsck-objects")) {
1678 } else if (!strcmp(arg
, "--verify")) {
1680 } else if (!strcmp(arg
, "--verify-stat")) {
1683 } else if (!strcmp(arg
, "--verify-stat-only")) {
1687 } else if (skip_to_optional_arg(arg
, "--keep", &keep_msg
)) {
1688 ; /* nothing to do */
1689 } else if (skip_to_optional_arg(arg
, "--promisor", &promisor_msg
)) {
1690 ; /* already parsed */
1691 } else if (starts_with(arg
, "--threads=")) {
1693 nr_threads
= strtoul(arg
+10, &end
, 0);
1694 if (!arg
[10] || *end
|| nr_threads
< 0)
1695 usage(index_pack_usage
);
1696 if (!HAVE_THREADS
&& nr_threads
!= 1) {
1697 warning(_("no threads support, ignoring %s"), arg
);
1700 } else if (starts_with(arg
, "--pack_header=")) {
1701 struct pack_header
*hdr
;
1704 hdr
= (struct pack_header
*)input_buffer
;
1705 hdr
->hdr_signature
= htonl(PACK_SIGNATURE
);
1706 hdr
->hdr_version
= htonl(strtoul(arg
+ 14, &c
, 10));
1708 die(_("bad %s"), arg
);
1709 hdr
->hdr_entries
= htonl(strtoul(c
+ 1, &c
, 10));
1711 die(_("bad %s"), arg
);
1712 input_len
= sizeof(*hdr
);
1713 } else if (!strcmp(arg
, "-v")) {
1715 } else if (!strcmp(arg
, "--show-resolving-progress")) {
1716 show_resolving_progress
= 1;
1717 } else if (!strcmp(arg
, "--report-end-of-input")) {
1718 report_end_of_input
= 1;
1719 } else if (!strcmp(arg
, "-o")) {
1720 if (index_name
|| (i
+1) >= argc
)
1721 usage(index_pack_usage
);
1722 index_name
= argv
[++i
];
1723 } else if (starts_with(arg
, "--index-version=")) {
1725 opts
.version
= strtoul(arg
+ 16, &c
, 10);
1726 if (opts
.version
> 2)
1727 die(_("bad %s"), arg
);
1729 opts
.off32_limit
= strtoul(c
+1, &c
, 0);
1730 if (*c
|| opts
.off32_limit
& 0x80000000)
1731 die(_("bad %s"), arg
);
1732 } else if (skip_prefix(arg
, "--max-input-size=", &arg
)) {
1733 max_input_size
= strtoumax(arg
, NULL
, 10);
1735 usage(index_pack_usage
);
1740 usage(index_pack_usage
);
1744 if (!pack_name
&& !from_stdin
)
1745 usage(index_pack_usage
);
1746 if (fix_thin_pack
&& !from_stdin
)
1747 die(_("--fix-thin cannot be used without --stdin"));
1748 if (from_stdin
&& !startup_info
->have_repository
)
1749 die(_("--stdin requires a git repository"));
1750 if (!index_name
&& pack_name
)
1751 index_name
= derive_filename(pack_name
, "idx", &index_name_buf
);
1755 die(_("--verify with no packfile name given"));
1756 read_idx_option(&opts
, index_name
);
1757 opts
.flags
|= WRITE_IDX_VERIFY
| WRITE_IDX_STRICT
;
1760 opts
.flags
|= WRITE_IDX_STRICT
;
1762 if (HAVE_THREADS
&& !nr_threads
) {
1763 nr_threads
= online_cpus();
1764 /* An experiment showed that more threads does not mean faster */
1769 curr_pack
= open_pack_file(pack_name
);
1770 parse_pack_header();
1771 objects
= xcalloc(st_add(nr_objects
, 1), sizeof(struct object_entry
));
1773 obj_stat
= xcalloc(st_add(nr_objects
, 1), sizeof(struct object_stat
));
1774 ofs_deltas
= xcalloc(nr_objects
, sizeof(struct ofs_delta_entry
));
1775 parse_pack_objects(pack_hash
);
1776 if (report_end_of_input
)
1777 write_in_full(2, "\0", 1);
1779 conclude_pack(fix_thin_pack
, curr_pack
, pack_hash
);
1783 foreign_nr
= check_objects();
1786 show_pack_info(stat_only
);
1788 ALLOC_ARRAY(idx_objects
, nr_objects
);
1789 for (i
= 0; i
< nr_objects
; i
++)
1790 idx_objects
[i
] = &objects
[i
].idx
;
1791 curr_index
= write_idx_file(index_name
, idx_objects
, nr_objects
, &opts
, pack_hash
);
1795 final(pack_name
, curr_pack
,
1796 index_name
, curr_index
,
1797 keep_msg
, promisor_msg
,
1802 if (do_fsck_object
&& fsck_finish(&fsck_options
))
1803 die(_("fsck error in pack objects"));
1806 strbuf_release(&index_name_buf
);
1807 if (pack_name
== NULL
)
1808 free((void *) curr_pack
);
1809 if (index_name
== NULL
)
1810 free((void *) curr_index
);
1813 * Let the caller know this pack is not self contained
1815 if (check_self_contained_and_connected
&& foreign_nr
)